UPDATED:NBC has picked up to pilot REM, the spec by Lone Star creator Kyle Killen which was taken out by 20th TV a couple of weeks ago. Additionally, the network has given the green light to 3 more comedy pilots: Free Agents, LoveLives and an untitled project from Dan Goor.

Killen’s REM, from 20th TV, is described as an Inception-style thriller about a cop who wakes up after an accident to find he is living in two different realities. The project has been given a cast-contingent order. As expected, new NBC chief Bob Greenblatt has been very opportunistic with spec scripts, handing out a significant chunk of his pilot orders to project brought to the network as specs.

Free Agents, from UMS and Party Down co-creator John Enbom, is a single-camera romantic comedy based on the U.K. format that explores the attraction between two quirky co-workers who are both on the rebound, one from a divorce and the other from the loss of a fiancé. While in the original series, which ran on Channel 4 in 2009, the lovebirds were agents, in the NBC version they will be PR executives. Enbom is executive producing with Kenton Allen from Big Talk Prods., producer of the British series. Todd Holland and Karey Burke are also exec producing through their UMS-based company, with Holland directing. The comedy has been given a cast-contingent order.

LoveLives, from 20th TV and Chernin Entertainment, is a multicamera comedy about a couple who explore cheating on their spouse and the friends/family members around them who encourage it. Family Guy executive producer Chris Sheridan wrote the script and is exec producing with Peter Chernin and Katherine Pope.

The untitled Dan Goor project, from UMS and BermanBraun, is a multicamera comedy about a young doctor who joins his parents’ medical practice and spends as much time tending to his family as to his patients. It was was written by Dan Goor (Parks & Recreation) who is exec producing with Gail Berman and Lloyd Braun.